Annealing-box.



P. CORDES.

ANNEALING B0X.

APPLIOATIONYIILED 1621111.27, 1911.

Patented Dec. 19, 1911.

COLUMBIA PLANMIIAPM co..wASH|NaTON. D. C.

WITNELSSES. j. ff. 71/ ef/@L mt. Q 3fm UNITED STATES PATENT OFFICE.

FRANK CORDES, OF I-IULTON STATION, PENNSYLVANIA, `ASSIGrNOR 'IO UNITEDENGI- NEERING AND FOUNDRY COMPANY, 0F PITTSBURGH, PENNSYLVANIA, ACORPORA- TION 0F PENNSYLVANIA.

To all whom it may concern:

Be it known that I, FRANK CORDES, a citizen of the United States, andresident of Hulten Station, in the county of Allegheny and State ofPennsylvania, have invented a new and useful Improvement in Annealing-Boxes; and'I do hereby declare the following to be a full, clear, andexact description thereof.

My invention relates to annealing boxes; and its object is to provide animproved construction of such boxes to more effectively resist thestrains set up by the high temperatures and successive heating andcooling to which they are subjected and prevent their distortion anddestruction therefrom.

In another application, Serial No. 617,154, of even date herewith, Ihave described and claimed more broadly than hereinafter a box of thesame general type as that of my present invention which consists in aparticular form of box embodying a main feature of the said application,namely, the provision in a cast metal box having side walls and aconnecting roof wall of external bracing ribs extending upwardly on theside walls and continuing on the roof, the said walls interiorly of saidanges being of unbroken contour and continuing thickness. In the saidapplication, I have also described and claimed a box construction havingbracing ribs of hollow form.

The present application relates to a box of the same general type inwhich the bracing ribs of hollow form are dispensed with and a series ofupwardly extending solid ribs are provided, each having transverseintegral diaphragms or webs joining the side walls, the said ribscontinuing preferably over the top wall and connecting across the same.

In the accompanying drawings, Figure 1 is a longitudinal elevationpartly in vertical section of an annealing box illustrating myinvention. Fig. 2 is a plan view partly in section, and Fig. 3 is an endview of the same. Fig. 4: is a vertical transverse section of the boxillustrated in Figs. 1 to 3, and Fig 5 is a detail horizontal sectionthrough a bracing rib on the line 5 5 Fig. 3.

The annealing box 1 is preferably cast in one integral piece of iron orsteel, having the side walls 2, the roof wall 3 preferably of archedform and integral therewith, and the end walls 4. The side and end wallsare Specification of Letters Patent.

Application filed March 27, 1911.

ANNEALING-BOX.

Patented Dee. 19, 1911.

Serial No. 617,153.

provided with the base flange 5 which is placed directly on thesupporting base for the castings in the annealing oven (notillustrated). The side walls 2 are provided with a series of solidbracing ribs 6 preferably extending vertically, as shown, and having theintegral connecting portion 6 extending over the roof wall 3. The sidewalls 2 are continuous from end to end, the portions 2 thereof directlyinside of the bracing rib 6 being of unbroken contour, and the innerfaces 2 of the walls being preferably continuously flat from end to end,and the bracing ribs are provided to supplement the continuous side androof wall. The tendency to incomplete contraction after a series ofsevere heats and consequent distortion of the box and strainsin themetal is thus prevented and the box is enabled to stand up for longperiods of use without wearing out.

The ribs 6 are provided with integral transverse diaphragms or webs 7arranged at suitable intervals on the side walls 2 and roof walls 3 asshown, the ribs preferably having the longitudinal flanges 8 to completea truss framework for t-he box. The transverse diaphragms or webs 7joining the walls at frequent intervals act to tie them to thisframework and effectively prevent the sagging of the walls under greatheat. The transverse diaphragms 7 are in the form of short webs which donot add appreciably to the weight of the box or act to promote saggingwhen at a high temperature. This construct-ion is to be distinguishedfrom that of boxes in which horizontal longitudinally extending ribs areemployed, which do not materially ybrace the box when heated, but merelyincrease its tendency to sag by increasing the dead weight of the wallswhen at a high temperature. The box is also provided with the transversebracing flanges 9 depending interiorly from the roof 10 and arrangedpreferably between and alternately of the connecting portions 6 of therib 6. The arched roof wall 8 is thus effectively braced and its saggingbetween the bracing ribs prevented.

What I claim is:

1. A cast metal annealing box having walls provided at suitableintervals with bracing ribs having transverse diaphragms substantiallyincluded within the width of the ribs and integral with the wall,substantially as described.

2. An annealing box having integral side and top Walls, said side Wallshaving brac-4 ing ribs provided With a .series of transverse integraldiaphragins, said ribs continuing over said top Wall, substantially asdescribed.

3. An annealing box having side Walls provided With vertically extendingribs each having a series of transverse integral diaphragins,substantiallyv included Within the width ot the ribs, and a root Wallhaving transversel;7 extending flanges.

Il. A cast inetal one-piece annealing box having integral bracing ribsextending continuously around its sides and roof Walls, said ribs beingprovided at intervals With transverse integral diaphragme.

5. A cast inetal one-piece annealing box having integral bracing ribsextending continuousliT around its sides and roof Walls, said ribs beingprovided at intervals with transverse integral diaphragnis, and saidroof Wall having depending interior flanges between said ribs,substantially as described.

G. An annealing box having integral side and root Walls, said side Wallsbeing provided with upwardly extending externall7 arranged ribscontinuing over said root Wall,

arranged at intervals, substantially as de scribed.

S. An annealing box having integral side and rootl Walls, the side Wallshaving substantially flat inner faces, and being ot con tinuousthickness throughout and provided with vertically7 extending externalribs having transverse integral bracing diaphragins arranged atintervals and substantially in` eluded Within the Width of the ribs,said root' Wall having interior depending flanges, substantially asdescribed.

In testimony whereof, I the said FRANK CORDES have hereunto set in vhand.

FRANK CORDES. litnesses ROBERT C. To'r'rnN, JOHN F. Winn Copies of thispatent may be obtained for ive cents each, by addressing theCommissioner of Patents, Washington, D. C.

